From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Martin Sperl <kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
Cc: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
lee-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rpi-kernel
<linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
Subject: Re: [PATCH 4/6] spi: bcm2835: warn about native-chip-selects being used
Date: Mon, 30 Mar 2015 21:21:05 -0600 [thread overview]
Message-ID: <551A12A1.8010309@wwwdotorg.org> (raw)
In-Reply-To: <4790EEB6-C62D-4FE0-98AE-26ADE3024B04-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
On 03/30/2015 01:20 PM, Martin Sperl wrote:
>
>> On 30.03.2015, at 06:22, Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> wrote:
>>>
>>> But I do not know what is the correct call to use.
>>
>> I don't know what you mean by "correct call" here, sorry. If you're
>> talking about working out which GPIO maps to the /CS pin then can the
>> pinctrl API help?
>
> Well - how do I change the mode of a GPIO to output (which is typically ALT0)?
> something like this:
>
>>> gpio_set_output(spi->gpio_cs);
>
> I was hoping someone would have an explicit pointer...
Presumably the following DT bindings would work:
Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
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next prev parent reply other threads:[~2015-03-31 3:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-29 14:03 [PATCH 4/6] spi: bcm2835: warn about native-chip-selects being used Martin Sperl
[not found] ` <0330B85B-A297-482B-80A9-E01F236D33D2-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-03-30 4:22 ` Mark Brown
[not found] ` <20150330042205.GB1568-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-03-30 19:20 ` Martin Sperl
[not found] ` <4790EEB6-C62D-4FE0-98AE-26ADE3024B04-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-03-31 3:21 ` Stephen Warren [this message]
2015-03-31 3:23 ` Stephen Warren
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